Metal wheel



M. LACHMAN.

METAL WHEEL.

APPLICATION FILED MAR. 14, 1919.

1 ,3 9 6,443 Patented Nov. 8, 1921..

2 SHEETSSHEET 'l- 3% INVENTOR 7? 777avrccelac/v/v1a/1 ATTORNEYS M. LACHMAN.

METAL WHEEL.

APPLlCATlON FILED MAR.I4,1919.

1,396,443. Patentefi Nov 8, 1921.

2 SHEETS-SHEET 2.

INL ENTOR 7777ur/ce,Lac/7/11arz TION OF PENNSYLVANIA.

PATE

NT OFFICE.

METAL WHEEL.

Specification of Letters Patent.

Patented Nov. 8, 1921.

Application filed March 14, 1919. Serial No. 282,591.

To all whom it may concern:

Be it known that I, MAURICE LAoHiIaN, a citizen of the United States, and a resident of New York, in the county of New York and State of New York, have invented certain new and useful Improvements in Metal lVheels, of which the following is a specification.

My invention relates to that class of wheels in which a metal plate or disk is employed for the web or spoke part of the wheel, said disk or plate having hub or IlIIl portions for the wheel integral with it.

The object of my invention is to secure cheapness and ease of construction together with superior strength.

My invention aims primarily 'at aconstruction of disk or plate suitable for use with wheels in which a separate rim or felly part attached or secured to the edge of the disk is employed.

To these ends my invention consists essentially of a sheet metal disk or plate comprising web or spoke and hub part integral with one another and a rim part also integral therewith but bent over to form transverse supporting brackets supporting the separate rim or felly as hereinafter more particularly described.

The invention further consists in so bending or forming the ears constituting said brackets that they will have a bearing against the face or side of the disk to thereby afiord a stronger support for the rim.

In the accompanying drawings:

Figure 1 is a side elevation of a disk and attached rim constructed in accordance with my invention.

Fig. 2 is a transverse section on the line 2 2 Fig. 1.

Fig. 3 illustrates a preferred construction of the disk in which the web or spoke part is furnished with integral tongues operating as struts 0r braces and further shows a modification in the manner of forming the integral suporting brackets of the rim.

ig. 4 is a transverse section on the line H Fig. 3.

Fig. 5 is a plan of the metal blank in which tongues are formed.

Fig. 6 shows in transverse section one of the ways in which a multiplicity of disks may be employed to form a wheel; Fig. 7 anpreferred form of the brackets and other modification in the disposition of a pair of dlSkS forming the component parts of the same wheel. 1 indicates a metal plate or disk constituting the web or spoke portion of the wheel and perforated at its center 3 for the axle or attachment of the strengthening hub or bearings. 5 indicates a separate metal rim or felly and 6 indicates supporting brackets upon which said rim is supported and-to which it is attached by spot welding or by other means. Said brackets 6 in the blank as shown in Fig. 5 are formed with the plate 1 at the edge thereof and in order that they may have a firm support to .sustain the rim they are bent at two lines,

one, line 7-by which they are turned down to a plane transverse to the vplane of the disk to-aflord a bearing for the inner surface of the rim, and the other the line 8 at right angles to the first, whereby, at a free edge 9, said bracket is given a bearing against the face of the disk. The lines of cut in the blank as clearly shown in the Fig. 5 are'the radial lines 10 and the detached lines 11 transverse to the lines 10 which permit the ears to be bent on the lines 8 as already described.

If desired one extreme the ear may be curved as indicated at 13 thereby avoiding the presence of any sharp exposed corner in the face of the finished wheel or disk. In addition to the brackets thus provided for the rim, tongues 14 may be cut out of the web or spoke part between the circumferentially continuous hub part of the disk and edge and bent to one side of the plane of the disk for attachmentto the flange of the enlarged portion 15 of the hub as shown in Fig. 1, thereby strengthening the finished wheel against side strains or torsional effects while the wheel is in operation. As will be understood in the art the main body portion of the disk may be slightly concaved so that it will be better adapted to cushion the wheel against road shocks.

Instead of forming the supporting brackets in the manner already described, they may be formed as indicated in Fig. 4 to support the rim and to have a bearing on the face of the disk. In this ins ance the ears formed by the radial slits at t e edge of the disk are bent outwardly as at 18 to afford the flat bearing 20 for the inside of the-rim outer corner of integrally the'wheel or at a point substantially midwa between the edges of the rim.

bviously the wheel may be made up from a single disk with rim attached thereto as described or a number of disks may be assembled to form the wheel. Thus, as indicated in Fig. 6, a pair of disks may be arranged beside one another with the ears projecting from their-contiguous faces to- Wards one another and the ears of one disk extending into spaces between the ears or brackets of the other, while the brackets on the outer faces of the disksextend out to approximately the edge of the rim.

While- I have so far described the brackets as extending in opposite directions from the plane of the in the same direction and a pair of the disks be used to form, the wheel and afford a support across approximately the whole width of the rim. This modification is illustrated in Fig. 7.- In this case the two disks may be furnished at the opening 3 with inturned flanges 17 which engage one another and space the disks apart at the center. Other modifications in the disposition or use of the disks with their supporting brackets to make up a wheel will readily occur to those skilled in the art.

Obviously the rim and disk may be secured together in any desired way as for instance by spot welding the rim to the brackets. Likewise, if desired, the brackets may be welded to the face of the disk at the places where they engage the same.

What I claim as my invention is 1. In a wheel of the character described, a sheet metal plate constituting the spoke part of the wheel and slit radially at its circumferential edge to provide supporting brackets bent to extend alternately in oposite directions transversely to the plane of the wheel integral therewith and engagdisk, they might all extend ing the inner surface of the rim, said brackets having also a bearing against the face of the plate.

2. In a wheel of the character described,

a metal disk constituting the spoke part of the wheel and having at its edgerim supporting brackets cut from but integral with the disk and bent to have a bearing against the face of the disk.

3. In a wheel of the character described, a metal disk constituting the spoke part of the wheel and having its entire edge cut and bent to form supporting brackets for the rim over the whole interior circumference thereof, said brackets having also ing against the face of the disk.

4. In a wheel of the character described, a metal disk constituting the spoke part of the wheel and having an edge out and bent to form sup orting brackets for the rim, said brackets aving a bearing by their edges against the face of the disk.

5. In a metal wheel of the character described, the combination with a metal rim, of a multiplicity of metal disks each having its entire circumferential edge out radially and bent transversely to afford supports for the rim.

6. In a metal wheel of the character described, the combination with a metal rim,

of a metal disk having ears cut in the cira bearcumferential edge thereof and bent on two lines as described to engage and form a support on the inner face of the rim for the inside of the rim and to engage or have a liealging by an edge against the face of the 7. In a wheel of the character described, a metal disk having its edge formed into brackets integral with said disk by two bends at rght angles to one another, one to provide a bearing forthe inner side of the rim and the other to form a bearing of an ad e of the bracket against the face of the Signed at New York in the county of New York and State of New York this 12th day of March A. D. 1919. V

MAURICE, LACHMAN.

Witnesses:

F. B. TOWNSEND, IRENE Lnrxownz. 

